Represents attributes that are copied (projected) from the table into
an index. These are in addition to the primary key attributes and
index key attributes, which are automatically projected.

Parameters:

projection Represents attributes that are copied (projected) from the table into
an index. These are in addition to the primary key attributes and
index key attributes, which are automatically projected.

Represents attributes that are copied (projected) from the table into
an index. These are in addition to the primary key attributes and
index key attributes, which are automatically projected.

Returns a reference to this object so that method calls can be chained together.

Parameters:

projection Represents attributes that are copied (projected) from the table into
an index. These are in addition to the primary key attributes and
index key attributes, which are automatically projected.

Returns:

A reference to this updated object so that method calls can be chained
together.